Housing for a heater



FIG. 1 is a front elevation view of a housing for a heater showing our new design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front and right side perspective view thereof. 

The ornamental design for a housing for a heater, as shown. 